CHARLOTTE, N.C. (AP) – The latest seizure at a Transportation Security Administration checkpoint may have left officials scratching their heads.

The Charlotte Observer reports 72-year-old Gonzalo Gonzalez of Jupiter, Florida, tried to board a flight last Thursday at Charlotte Douglas International Airport with a knife hidden inside a bottle of shampoo.

TSA officials said officers noticed something wrong with Gonzalez’s bag as it was being scanned at a security checkpoint and when they checked it, they found the knife in the shampoo mini-bottle.

Gonzalez was charged with carrying a concealed weapon. He was released from jail Friday and it’s not known if he has an attorney.

A TSA spokeswoman said another knife was found wrapped in toilet paper and concealed inside a box of cotton swabs at Gulfport-Biloxi International Airport in Mississippi.